Jennifer Lopez and her estranged husband Marc Anthony met up last week in Puerto Rico — sparking unconfirmed reports that they hooked up.

While Lopez has reportedly been enjoying a “fling” with a 24-year-old backup dancer, Us Weekly claims that Lopez and Anthony spent the night together in San Juan while shooting their talent competition show, “¡Q’Viva! The Chosen.”

Anthony picked up Lopez at the airport, and, sources say, he and JLo hooked up. “He has this hold over [Lopez],” a source claimed. “Marc never stayed in his hotel room.”

Another source shared that while there may have been hanky-panky going on between the couple, who split in July after seven years of marriage, there is no chance of full-blown reconciliation. “They may sleep together, but they’re over,” the source explains.

If this alleged romp took place, it is surprising given Lopez’s recent behavior. She has been rumored to be having a “fun fling” with 24-year-old Casper Smart. Smart was seen partying into the wee hours with the pop star in Las Vegas in September, and was spotted leaving her hotel in New York more recently.

At the American Music Awards Sunday night, Smart danced shirtless on stage with Lopez, who wore a revealing crystal-encrusted bodysuit. Later, JLo hit an after-party with Smart, and a source told Page Six that Lopez was “really affectionate” with him, and even introduced him to pals including “X-Factor” judge and industry bigwig L.A. Reid. Other sources say Lopez gave Smart a lap dance and a kiss at the party, and that they left hand-in-hand at 12:45 a.m.

Meanwhile, sources tell Page Six that Lopez and Anthony’s relationship seems strained, and that Lopez would only allow her ex to perform at the Sunday awards show if she went first and was given a much bigger segment than him.